I think a decision needs to be made on the car being broken for bits, before any offers or dibs is made or it will get complicated quickly.
I had to break my 300zx for parts as it was worth more in bits than to sell as a whole, I can see why your considering it. Your best off doing a spread sheet on what you would expect to pay for each bit secondhand along with doing a search to see what other members have sold for then add that up, but to be honest, it was the little bits that made me the most money when i broke mine (bits of trim ect).
John